The boring bar of a boring machine is 25 mm in diameter. During operation, the bar gets twisted though 0.01 radians and is subjected to a shear stress of 42 N/mm2. The length of the bar is (Taking G = 0.84 × 105 N/mm2)
  • a)
    500 mm
  • b)
    250 mm
  • c)
    625 mm
  • d)
    375 mm
Correct answer is option 'B'. Can you explain this answer?
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